St. Louis recently passed a new law requiring all new buildings to be made solar-ready.
All new structures—commercial and residential—must reserve rooftop sections for solar panels to be easily installed. The ordinance does not mandate that rooftop solar be installed.
The solar-ready zone must be at least 40% of the roof area. It can be one contiguous area or multiple smaller sub-zone areas that are no less than five feet in width at their narrowest point. The solar-ready area cannot be obstructed by pipes, vents, HVAC equipment, or other shadow-casting elements.
Construction documents must outline pathways for routing of piping from the solar-ready zone to the building’s electrical service panel or service hot water system. The electrical panel must also have reserved space for a dual-pole circuit breaker to support future solar installations.
New buildings that have permanently-installed onsite generation systems already, buildings whose solar-ready zones would be shaded from sunlight for more than 70% of the day, and buildings where a licensed design professional has deemed that the solar radiation available to the building is not suitable to a solar-ready zone or because the area requirement cannot be met due to extensive rooftop obstructions, may be exempt.
Related Stories
Codes and Standards | Oct 5, 2016
New York becomes the first city to adopt a target for energy storage
Mayor de Blasio also announces increased solar generation goals
Codes and Standards | Oct 4, 2016
New global residential floor space measurement standard unveiled
The new standards will produce better transparency and are said to benefit investors.
Codes and Standards | Sep 29, 2016
Dept. of Energy forecasts big jump in LED use, resulting energy savings
Big gains are expected in both commercial and residential markets.
Codes and Standards | Sep 28, 2016
San Francisco commercial, multifamily regulations aim to reduce traffic volume
City planners will require design features to cut miles driven.
Codes and Standards | Sep 28, 2016
Society of Landscape Architects releases guide to resilient design
The goal is to retrofit communities to better withstand extreme weather events.
Codes and Standards | Sep 26, 2016
Washington State Energy Code updates include dedicated outdoor air system requirements
The updates will change design approach to HVAC.
Codes and Standards | Sep 22, 2016
Construction firms pulling back from federal market due to new reporting rules
‘Subjective, very vague’ policies are said to create too much risk.
Codes and Standards | Sep 21, 2016
Airbnb presents legal liability for multifamily owners
How building owners can reduce risks.
Codes and Standards | Sep 21, 2016
Healthy buildings becoming a key design priority for both architects and building owners
Nationwide survey finds nearly three of four architects cite health impacts influencing design decisions
Data Centers | Sep 19, 2016
New ANSI/ASHRAE data center standard is performance-based, more flexible
The aim of the standard was to ‘not stifle innovation.’
